Venetian blind motor and venetian blind thereof

Abstract

The utility model relates to the technical field of curtains, and discloses a venetian blind motor and a venetian blind thereof, and the technical scheme is characterized in that the venetian blind motor comprises a housing, a motor assembly, a circuit board and an output member are arranged in the housing, a clutch is arranged between the motor assembly and the output member, the output member extends out of the housing, and a magnetic ring is arranged on the output member. Two Hall sensors are arranged on the circuit board above the magnetic ring and can drive the output piece to rotate when the motor assembly works, so that the steering direction and the stroke of the output piece can be detected when the motor assembly works; when the venetian blind is manually pulled, the output piece can also rotate, and the turning direction and the stroke of the output piece during manual operation can also be detected; the turning direction and the stroke can be obtained both manually and electrically, so that the lifting of the venetian blind is judged.

Description

Technical Field

[0001] The utility model relates to the technical field of curtains, and more specifically, to a venetian blind motor and a venetian blind thereof. Background Art

[0002] Electric venetian blinds are often used in office places. By using a DC motor to drive the blades to lift instead of the manual transmission method of traditional venetian blinds, the slats made of materials such as aluminum, wood, or PCV have an automatic flipping function, which can more precisely adjust the natural lighting level in the room and achieve the best visual comfort.

[0003] For venetian blinds that have both electric and manual functions, a clutch is provided, and the position of the clutch can be determined according to the design. The existing stroke detection mechanism is arranged at one end of the motor. When the user manually pulls the venetian blind, the stroke detection mechanism does not work. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a venetian blind motor that can also obtain the stroke when the user operates manually.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A venetian blind motor includes a housing. A motor assembly, a circuit board, and an output member are arranged inside the housing. A clutch is arranged between the motor assembly and the output member. The output member extends out of the housing. A magnetic ring is fixedly connected to the output member. One end of the circuit board extends to the magnetic ring. Two Hall sensors that cooperate with the magnetic ring are arranged on the circuit board.

[0006] As a further improvement of the utility model, shock pads are connected to both ends of the housing.

[0007] As a further improvement of the utility model, the clutch is an electromagnetic clutch.

[0008] As a further improvement of the utility model, the clutch includes an iron ring, a clutch member, a driven member, and two magnetic beads. The motor assembly includes a motor and a reducer. The motor is connected to the reducer. The iron ring is fixedly connected to the reducer. The clutch member is fixedly connected to the output shaft of the reducer. The two magnetic beads are respectively located on both sides of the clutch member and are adsorbed to the iron ring. Two grooves that cooperate with the magnetic beads are formed inside the driven member.

[0009] As a further improvement of the utility model, the driven member and the output member are integrally formed.

[0010] As a further improvement of the present utility model, a positioning section extends from the output shaft of the speed reducer, a positioning hole is formed on one side of the driven member facing the output shaft of the speed reducer, and the positioning section extends into the positioning hole.

[0011] As a further improvement of the present utility model, the housing includes a shell, a left end cover and a right end cover, and both the left end cover and the right end cover are detachably connected to the shell.

[0012] As a further improvement of the present utility model, a slot is formed on the left end cover, a positioning strip is formed outside the speed reducer, and the positioning strip is inserted into the slot.

[0013] As a further improvement of the present utility model, an avoidance hole is provided on the left end cover, and the avoidance hole is located between the magnetic ring and the Hall sensor.

[0014] A louver curtain includes the above-mentioned louver curtain motor.

[0015] The beneficial effects of the present utility model: In the present utility model, the magnetic ring is arranged on the output member, and two Hall sensors are arranged at the circuit board above the magnetic ring. When the motor assembly works, it will drive the output member to rotate, so that the rotation direction and stroke of the output member can be detected when the motor assembly works; when the louver curtain is manually pulled, the output member will also rotate, and the rotation direction and stroke of the output member can also be detected during manual operation; it can obtain the rotation direction and stroke both manually and electrically, so as to determine the lifting of the louver curtain. Description of the Drawings

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a sectional view of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the left end cover in the present utility model;

[0019] Figure 4 is a structural schematic diagram of the motor assembly in the present utility model;

[0020] Figure 5 is a structural schematic diagram of the driven member in the present utility model;

[0021] Figure 6 is a structural schematic diagram of the clutch in the present utility model.

[0022] Reference numerals: 1, housing; 11, housing body; 12, left end cover; 121, slot; 122, avoidance hole; 13, right end cover; 2, motor assembly; 21, motor; 22, speed reducer; 221, positioning section; 222, positioning strip; 3, circuit board; 41, iron ring; 42, clutch member; 43, follower; 431, groove; 432, positioning hole; 44, magnetic bead; 5, magnetic ring; 6, shock pad. Detailed implementation

[0023] The present utility model will be further described in detail below in conjunction with the drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component, respectively.

[0024] Refer to Figure 1 and Figure 2 As shown, a louver motor of this embodiment includes a housing 1. A motor 21 assembly 2, a circuit board 3 and an output member are arranged inside the housing 1. Among them, the circuit board 3 includes a control board which is electrically connected to the motor 21 assembly 2. The control board is located above the motor 21 assembly 2. A clutch is arranged between the motor 21 assembly 2 and the output member, so that the clutch function can be realized between the motor 21 assembly 2 and the output member. When the user manually pulls the louver, the output member will rotate, but it does not affect the state of the motor 21 assembly 2, which can protect the motor 21 assembly 2;

[0025] The output member extends out of the housing 1. A connecting portion is formed at one end of the output member extending out of the housing 1. Power is transmitted to the rope winder through the connecting portion. Conventionally, power is transmitted through a hexagonal bar. Therefore, the connecting portion is a hexagonal groove to facilitate connection with the hexagonal bar. Of course, it can also be realized by a spline connection method. There are various connection methods and will not be listed one by one;

[0026] A magnetic ring 5 is fixedly connected to the output member. One end of the circuit board 3 extends to the magnetic ring 5. Two Hall sensors cooperating with the magnetic ring 5 are arranged on the circuit board 3. The N poles and S poles on the magnetic ring 5 are distributed at intervals and are circumferentially and evenly distributed along the central axis of the magnetic ring 5. The change of magnetic poles is sensed by the Hall sensors to detect the rotation direction and stroke.

[0027] When the user manually pulls the louver, the output member will rotate, so that the magnetic ring 5 will rotate accordingly, thereby obtaining the rotation direction and distance of the manual movement and acquiring the stroke.

[0028] Refer to Figure 1As shown, shock pads 6 are connected to both ends of the outer shell 1. Among them, at least one embedding groove is provided at both ends of the outer shell 1, and the opening of the embedding groove faces downward, that is, the embedding groove is arranged from bottom to top;

[0029] Preferably, in this embodiment, two embedding grooves are provided at one end of the outer shell 1, and the two embedding grooves are arranged oppositely. Two clamping bars are formed on the inner side of the shock pad 6, and the clamping bars are arranged corresponding to the embedding grooves, and the clamping bars are snapped into the embedding grooves to form installation positioning.

[0030] In one embodiment, the clutch is an electromagnetic clutch. Among them, the active component of the electromagnetic clutch is connected to the motor 21 assembly 2, and the driven component of the electromagnetic clutch is connected to the output member to realize the function of electromagnetic clutch.

[0031] In this embodiment, referring to Figure 2 、 Figure 4 、 Figure 5 and Figure 6 As shown, the clutch includes an iron ring 41, a clutch member 42, a driven member 43 and two magnetic beads 44. The motor 21 assembly 2 includes a motor 21 and a speed reducer 22. The output speed of the motor 21 is reduced by the speed reducer 22. Among them, the speed reducer 22 is preferably a planetary gear speed reducer 22; the motor 21 is connected to the speed reducer 22;

[0032] The iron ring 41 is fixedly connected to the speed reducer 22. The iron ring 41 is connected to the shell of the speed reducer 22, and the shell of the speed reducer 22 is directly connected to the iron ring 41. A clutch cavity is provided on the driven member 43. The clutch member 42 is located in the clutch cavity, and the magnetic beads 44 are also located in the clutch cavity. The clutch member 42 is fixedly connected to the output shaft of the speed reducer 22. The output shaft of the speed reducer 22 passes through the iron ring 41, and a circular hole is provided at the center of the iron ring 41. When the output shaft of the speed reducer 22 rotates, that is, when the clutch member 42 rotates, the iron ring 41 remains stationary. The two magnetic beads 44 are respectively located on both sides of the clutch member 42 and adsorb to the iron ring 41. Two grooves 431 that cooperate with the magnetic beads 44 are formed in the driven member 43. The grooves 431 are provided on the side wall of the clutch cavity, and the two grooves 431 are arranged oppositely. When the clutch member 42 rotates with the output shaft of the speed reducer 22, the clutch member 42 will push the magnetic beads 44 to move, so that the two magnetic beads 44 are respectively partially embedded into the corresponding grooves 431. At this time, the end of the clutch member 42 abuts against the driven member 43 through the magnetic beads 44, so that the driven member 43 is driven to rotate;

[0033] When the user manually pulls the roller blind, the driven member 43 will rotate. At this time, the magnetic beads 44 are disengaged from the corresponding grooves 431, and the clutch member 42 will not rotate, realizing the function of manually operating the roller blind.

[0034] Referring to Figure 2 、 Figure 5As shown, the follower 43 is integrally formed with the output member, which can eliminate the installation between the follower 43 and the output member and save installation time.

[0035] Referring to Figure 4 and Figure 5 As shown, a positioning section 221 extends from the output shaft of the speed reducer 22. Among them, the positioning section 221 is cylindrical, so that its rotation will not affect the rotation of the follower 43. A positioning hole 432 is formed on the side of the follower 43 facing the output shaft of the speed reducer 22. The positioning section 221 extends into the positioning hole 432. The positioning section 221 and the positioning hole 432 cooperate to form a positioning function, so that the central axis of the follower 43 coincides with the central axis of the speed reducer 22.

[0036] Referring to Figure 1 、 Figure 2 and Figure 3 As shown, the housing 1 includes a housing body 11, a left end cover 12 and a right end cover 13. The left end cover 12 and the right end cover 13 are both detachably connected to the housing body 11. The left end cover 12 and the housing body 11 are detachably connected by bolts. Four bolts are provided between the left end cover 12 and the housing body 11, which are respectively located at the four corners of the left end cover 12;

[0037] The right end cover 13 and the housing body 11 are also detachably connected by bolts. Four bolts are also provided between the right end cover 13 and the housing body 11, which are respectively located at the four corners of the right end cover 13;

[0038] Among them, a first card slot is formed in the left end cover 12, which is located above the clutch. First through slots are formed on both sides in the left end cover 12, and the two first through slots cooperate to form the first card slot;

[0039] A second card slot is formed in the right end cover 13, which is located above the motor 21 assembly 2. Second through slots are formed on both sides in the right end cover 13, and the two second through slots cooperate to form the second card slot;

[0040] The circuit board 3 is inserted between the first card slot and the second card slot.

[0041] A slot 121 is formed on the left end cover 12, and a positioning strip 222 is formed outside the speed reducer 22. The positioning strip 222 is inserted into the slot 121. Among them, the left end cover 12 is the end cover close to the clutch side;

[0042] Preferably, two slots 121 are provided, which are respectively located on opposite sides of the left end cover 12. Two positioning strips 222 are also provided, which are formed on the shell of the speed reducer 22. During installation, positioning is completed by inserting the positioning strip 222 into the corresponding slot 121.

[0043] Referring to Figure 2As shown, an avoidance hole 122 is provided on the left end cover 12. The avoidance hole 122 is located between the magnetic ring 5 and the Hall sensor to prevent the Hall sensor from being blocked.

[0044] A louver curtain includes the above-mentioned louver curtain motor, and also includes one or more rope winders and a variable force torsion spring to enable manual and electric control of the lifting of the louver curtain.

[0045] When the motor 21 assembly 2 works, the rope winder and the variable force torsion spring are driven to work through transmission. At this time, the clutch is in the engaged state, and the gravity of the louver curtain is overcome by the variable force torsion spring, so that the louver curtain can stay at any position of lifting.

[0046] When the louver curtain is manually pulled down or lifted up, the clutch is in the disengaged state, and the louver curtain can be lowered or raised through the deformation of the variable force torsion spring.

[0047] Certainly, when the motor 21 assembly 2 works, the variable force torsion spring also contracts and unfolds as the louver curtain rises and falls.

[0048] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. Any technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A venetian blind motor, characterized in that: The invention comprises a housing (1), wherein a motor assembly (2), a circuit board (3) and an output member are arranged inside the housing (1), a clutch is arranged between the motor assembly (2) and the output member, the output member extends out of the housing (1), a magnetic ring (5) is fixedly connected to the output member, one end of the circuit board (3) extends to the magnetic ring (5), and two Hall sensors cooperating with the magnetic ring (5) are arranged on the circuit board (3).

2. The venetian blind motor according to claim 1, characterized in that: Both ends of the housing (1) are connected to shock-absorbing pads (6).

3. The venetian blind motor according to claim 1, characterized in that: The clutch is an electromagnetic clutch.

4. The venetian blind motor according to claim 1, characterized in that: The clutch comprises an iron ring (41), a clutch member (42), a driven member (43) and two magnetic beads (44); the motor assembly (2) comprises a motor (21) and a reducer (22); the motor (21) is connected to the reducer (22); the iron ring (41) is fixedly connected to the reducer (22); the clutch member (42) is fixedly connected to the output shaft of the reducer (22); the two magnetic beads (44) are respectively located on both sides of the clutch member (42) and are adsorbed by the iron ring (41); and two grooves (431) are formed in the driven member (43) and are matched with the magnetic beads (44).

5. The venetian blind motor according to claim 4, characterized in that: The driven member (43) and the output member are integrally formed.

6. The venetian blind motor according to claim 4, characterized in that: The output shaft of the reducer (22) is extended with a positioning section (221), and the driven member (43) is formed with a positioning hole (432) on one side facing the output shaft of the reducer (22), and the positioning section (221) extends into the positioning hole (432).

7. The venetian blind motor according to claim 4, characterized in that: The housing (1) comprises a shell (11), a left end cover (12) and a right end cover (13); the left end cover (12) and the right end cover (13) are both detachably connected to the shell (11).

8. The venetian blind motor according to claim 7, characterized in that: A slot (121) is formed on the left end cover (12), a positioning bar (222) is formed outside the reducer (22), and the positioning bar (222) is inserted into the slot (121).

9. The venetian blind motor according to claim 7, characterized in that: The left end cover (12) is provided with an avoidance hole (122), and the avoidance hole (122) is located between the magnetic ring (5) and the Hall sensor.

10. A venetian blind, characterized in that: A venetian blind motor comprising any one of claims 1 to 9.

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